{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2024-57892", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-01-11T14:45:42.028Z", "datePublished": "2025-01-15T13:05:44.635Z", "dateUpdated": "2025-11-03T20:55:05.774Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-05-04T10:06:02.283Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nocfs2: fix slab-use-after-free due to dangling pointer dqi_priv\n\nWhen mounting ocfs2 and then remounting it as read-only, a\nslab-use-after-free occurs after the user uses a syscall to\nquota_getnextquota. Specifically, sb_dqinfo(sb, type)->dqi_priv is the\ndangling pointer.\n\nDuring the remounting process, the pointer dqi_priv is freed but is never\nset as null leaving it to be accessed. Additionally, the read-only option\nfor remounting sets the DQUOT_SUSPENDED flag instead of setting the\nDQUOT_USAGE_ENABLED flags. Moreover, later in the process of getting the\nnext quota, the function ocfs2_get_next_id is called and only checks the\nquota usage flags and not the quota suspended flags.\n\nTo fix this, I set dqi_priv to null when it is freed after remounting with\nread-only and put a check for DQUOT_SUSPENDED in ocfs2_get_next_id.\n\n[akpm@linux-foundation.org: coding-style cleanups]"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/ocfs2/quota_global.c", "fs/ocfs2/quota_local.c"], "versions": [{"version": "8f9e8f5fcc059a3cba87ce837c88316797ef3645", "lessThan": "58f9e20e2a7602e1dd649a1ec4790077c251cb6c", "status": "affected", "versionType": "git"}, {"version": "8f9e8f5fcc059a3cba87ce837c88316797ef3645", "lessThan": "8ff6f635a08c30559ded0c110c7ce03ba7747d11", "status": "affected", "versionType": "git"}, {"version": "8f9e8f5fcc059a3cba87ce837c88316797ef3645", 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"https://git.kernel.org/stable/c/58f9e20e2a7602e1dd649a1ec4790077c251cb6c"}, {"url": "https://git.kernel.org/stable/c/8ff6f635a08c30559ded0c110c7ce03ba7747d11"}, {"url": "https://git.kernel.org/stable/c/f44e6d70c100614c211703f065cad448050e4a0e"}, {"url": "https://git.kernel.org/stable/c/2d431192486367eee03cc28d0b53b97dafcb8e63"}, {"url": "https://git.kernel.org/stable/c/2e3d203b1adede46bbba049e497765d67865be18"}, {"url": "https://git.kernel.org/stable/c/ba950a02d8d23811aa1120affd3adedcfac6153d"}, {"url": "https://git.kernel.org/stable/c/5f3fd772d152229d94602bca243fbb658068a597"}], "title": "ocfs2: fix slab-use-after-free due to dangling pointer dqi_priv", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", 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Specifically, sb_dqinfo(sb, type)->dqi_priv is the\ndangling pointer.\n\nDuring the remounting process, the pointer dqi_priv is freed but is never\nset as null leaving it to be accessed. Additionally, the read-only option\nfor remounting sets the DQUOT_SUSPENDED flag instead of setting the\nDQUOT_USAGE_ENABLED flags. Moreover, later in the process of getting the\nnext quota, the function ocfs2_get_next_id is called and only checks the\nquota usage flags and not the quota suspended flags.\n\nTo fix this, I set dqi_priv to null when it is freed after remounting with\nread-only and put a check for DQUOT_SUSPENDED in ocfs2_get_next_id.\n\n[akpm@linux-foundation.org: coding-style cleanups]"}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.4.290", "versionStartIncluding": "4.6"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.234", "versionStartIncluding": "4.6"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.177", "versionStartIncluding": "4.6"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.125", "versionStartIncluding": "4.6"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.70", "versionStartIncluding": "4.6"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12.9", "versionStartIncluding": "4.6"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.13", "versionStartIncluding": "4.6"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-05-04T10:06:02.283Z"}}}, "cveMetadata": {"cveId": "CVE-2024-57892", "state": "PUBLISHED", "dateUpdated": "2025-05-04T10:06:02.283Z", "dateReserved": "2025-01-11T14:45:42.028Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2025-01-15T13:05:44.635Z", "assignerShortName": "Linux"}, "dataVersion": "5.1"}

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Specifically, sb_dqinfo(sb, type)->dqi_priv is the\ndangling pointer.\n\nDuring the remounting process, the pointer dqi_priv is freed but is never\nset as null leaving it to be accessed. Additionally, the read-only option\nfor remounting sets the DQUOT_SUSPENDED flag instead of setting the\nDQUOT_USAGE_ENABLED flags. Moreover, later in the process of getting the\nnext quota, the function ocfs2_get_next_id is called and only checks the\nquota usage flags and not the quota suspended flags.\n\nTo fix this, I set dqi_priv to null when it is freed after remounting with\nread-only and put a check for DQUOT_SUSPENDED in ocfs2_get_next_id.\n\n[akpm@linux-foundation.org: coding-style cleanups]"}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ocfs2: se corrige slab-use-after-free debido al puntero colgante dqi_priv Al montar ocfs2 y luego volver a montarlo como de solo lectura, se produce un slab-use-after-free despu\u00e9s de que el usuario usa una llamada al sistema a quota_getnextquota. Espec\u00edficamente, sb_dqinfo(sb, type)->dqi_priv es el puntero colgante. Durante el proceso de remontaje, el puntero dqi_priv se libera pero nunca se establece como nulo, dej\u00e1ndolo para que se pueda acceder a \u00e9l. Adem\u00e1s, la opci\u00f3n de solo lectura para remontaje establece el indicador DQUOT_SUSPENDED en lugar de establecer los indicadores DQUOT_USAGE_ENABLED. Adem\u00e1s, m\u00e1s adelante en el proceso de obtenci\u00f3n de la siguiente cuota, se llama a la funci\u00f3n ocfs2_get_next_id y solo verifica los indicadores de uso de cuota y no los indicadores de cuota suspendida. Para solucionar esto, establezco dqi_priv en nulo cuando se libera despu\u00e9s de volver a montar con solo lectura y pongo una marca de verificaci\u00f3n para DQUOT_SUSPENDED en ocfs2_get_next_id. [akpm@linux-foundation.org: limpiezas de estilo de codificaci\u00f3n]"}], "id": "CVE-2024-57892", "lastModified": "2025-11-03T21:18:38.507", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}, "published": "2025-01-15T13:15:13.710", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/2d431192486367eee03cc28d0b53b97dafcb8e63"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/2e3d203b1adede46bbba049e497765d67865be18"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/58f9e20e2a7602e1dd649a1ec4790077c251cb6c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/5f3fd772d152229d94602bca243fbb658068a597"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8ff6f635a08c30559ded0c110c7ce03ba7747d11"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/ba950a02d8d23811aa1120affd3adedcfac6153d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f44e6d70c100614c211703f065cad448050e4a0e"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-416"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-416"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"bugzilla": {"description": "kernel: ocfs2: fix slab-use-after-free due to dangling pointer dqi_priv", "id": "2338193", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2338193"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.8", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-416", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nocfs2: fix slab-use-after-free due to dangling pointer dqi_priv\nWhen mounting ocfs2 and then remounting it as read-only, a\nslab-use-after-free occurs after the user uses a syscall to\nquota_getnextquota. Specifically, sb_dqinfo(sb, type)->dqi_priv is the\ndangling pointer.\nDuring the remounting process, the pointer dqi_priv is freed but is never\nset as null leaving it to be accessed. Additionally, the read-only option\nfor remounting sets the DQUOT_SUSPENDED flag instead of setting the\nDQUOT_USAGE_ENABLED flags. Moreover, later in the process of getting the\nnext quota, the function ocfs2_get_next_id is called and only checks the\nquota usage flags and not the quota suspended flags.\nTo fix this, I set dqi_priv to null when it is freed after remounting with\nread-only and put a check for DQUOT_SUSPENDED in ocfs2_get_next_id.\n[akpm@linux-foundation.org: coding-style cleanups]"], "name": "CVE-2024-57892", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-01-15T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-57892\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-57892\nhttps://lore.kernel.org/linux-cve-announce/2025011513-CVE-2024-57892-6d53@gregkh/T"], "threat_severity": "Important"}

{}